package com.xpu.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.xpu.reggie.common.R;
import com.xpu.reggie.entity.Employee;
import com.xpu.reggie.service.EmployeeService;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@RestController
@RequestMapping("employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     */
    @PostMapping("login")
    public R<Employee> login(@RequestBody Employee employee, HttpServletRequest request) {

        String username = employee.getUsername();
        String password = employee.getPassword();

        //1、 将页面提交的密码password进行md5加密处理
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2、根据页面提交的用户名username查询数据库
        QueryWrapper<Employee> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("username", username);
        Employee emp = employeeService.getOne(queryWrapper);

        //3、如果没有查询到则返回用户名不正确
        if (emp == null) {
            return R.error("用户名不正确");
        }

        //4、密码比对，如果不一致则返回密码错误
        if (!emp.getPassword().equals(password)) {
            return R.error("密码错误");
        }

        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("员工账号已禁用");
        }

        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     */
    @PostMapping("logout")
    public R<String> logout(HttpServletRequest request) {
        //销毁 session
        request.getSession().invalidate();
        return R.success("退出成功");
    }

    /**
     * 新增员工
     */
    @PostMapping
    public R<String> save(@RequestBody Employee employee, HttpServletRequest request) {
        //设置初始密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        //获得当前登录用户的id
        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setCreateUser(empId);
        employee.setUpdateUser(empId);

        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     */
    @GetMapping("page")
    public R<Page<Employee>> page(Integer page, Integer pageSize, String name) {
        //构造分页构造器
        Page<Employee> pageInfo = new Page<>(page, pageSize);
        //构造条件构造器
        QueryWrapper<Employee> queryWrapper = new QueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotBlank(name), "name", name);
        //添加排序条件
        queryWrapper.orderByDesc("update_time");
        //执行查询
        employeeService.page(pageInfo, queryWrapper);
        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     */
    @PutMapping
    public R<String> update(@RequestBody Employee employee, HttpServletRequest request) {
        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setUpdateUser(empId);
        employee.setUpdateTime(LocalDateTime.now());

        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     */
    @GetMapping("{id}")
    public R<Employee> getById(@PathVariable Long id) {
        Employee employee = employeeService.getById(id);
        return R.success(employee);
    }
}
